CMF Veteran Member
Join Date: Feb 2010
Location: Northwest Louisiana
Re: 2000 3.1v6 idle all over the place
My PCV fitting leaked under the throttle cable bracket. I had a similar problem until I replaced it - then the idle settled down to the proper value.
Part was something like $8 at the Chevy dealership.
335K miles on original motor and tranny (only motor work 2 x LIM replacement), Monroe SensaTrac struts front and back (new at approx. 300K miles), and Alero discs in back. LS fogs added with custom wiring. HID high beams, HIR low and halogen fogs. Raybestos Pro Grade front rotors and Bendix D747 ceramic pads on front.
Addendum: Rest in peace. Surge tank blew, motor overheated, I think she's lived a long and useful life.